Hi,
I'm guessing here, but I think you might be misunderstanding what the
"from" and "to" parameters for makeRotate do. It creates a rotation from
one _vector_ to another, not from one position to another (have a look
at the makeRotate docs in osg::Quat). You could try to use a unit vector
(to the nose of your model) as "from" and then now-previous as "to",
which should at least make your model point in the right direction, but
this is still not enough info to get the roll of the model. IOW
makeRotate cannot magically from 2 vectors figure out 3 rotations. If
your model only rotates in a horizontal plane, then makeRotate would
appear to work, but otherwise you'd be better off calculating 3
rotations yourself.
jp
Michael Weber wrote:
Well, my programm is pretty much like the osgsimulation example. But instead of
a aircraft which flies a constant route I use a model which flies an arbitrary
trajectory.
For the positioning of the model I just use makeTranslate with the new X,Y,Z
coordinates, which works as expected.
Now I try to rotate my model that way that it heads towards the direction it is
"flying". For the rotation I use makeRotate with the new position and the
previous position (taken from here
(http://forum.openscenegraph.org/viewtopic.php?p=16587#16587)).
But somehow it works not as expected. The model always looks somewhere else. So
I suppose either I use the makeRotate in a wrong way or the rotation somehow
depends on the position within the EllipsoidModel (maybe some conversion from
world to local coordinates or vice versa?)
Any ideas?
Michael
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=18856#18856
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